What is kinetic energy?

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 m v², where m is mass and v is velocity. It increases with the square of speed.

How do I calculate force?

Force equals mass times acceleration (F = m a), Newton's second law. It is measured in newtons (N), where 1 N = 1 kg·m/s².

What is the difference between speed and velocity?

Speed is a scalar quantity (how fast), while velocity is a vector that also includes direction. An object moving in a circle at constant speed has changing velocity.

Physics Calculators

12 calculators

Explore the fundamental laws of nature with calculators for motion, energy, forces, waves, electricity, and thermodynamics.

Classical Mechanics Properties of Matter Electricity & Circuits 📏Mechanics 🔋Electricity & Magnetism 🌌Waves & Optics

12 calculators available

Classical Mechanics(4)↑ top

Centripetal Force Calculator

Calculate centripetal force, velocity, or radius for circula…

centripetal forcecentripetal force calculatoruniform circular motionFeatured

Force Calculator

Calculate force, mass, or acceleration using Newton's second…

force calculatornewton's second lawf=maFeatured

Kinetic & Potential Energy Calculator

Calculate kinetic energy, gravitational potential energy, an…

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Projectile Motion Calculator

Calculate range, maximum height, time of flight, and impact …

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Properties of Matter(1)↑ top

Density Calculator

Calculate density, mass, or volume using Ï = m/V. Supports …

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Electricity & Circuits(1)↑ top

Electricity Calculator

Calculate voltage, current, resistance, power, and energy us…

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Mechanics(2)↑ top

Engine Horsepower Calculator

Calculate engine horsepower from torque and RPM measurements…

enginehorsepowertorqueFeatured

Horsepower Calculator

Convert torque and RPM to horsepower. Valid for internal com…

horsepowertorqueRPMFeatured

Electricity & Magnetism(3)↑ top

Ohms Law Calculator

Compute voltage, current, resistance, or power using Ohm's L…

ohms-lawelectricityvoltageFeatured

Resistor Calculator

Decode resistor color bands to determine resistance value, t…

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Voltage Drop Calculator

Calculate voltage drop in electrical circuits based on wire …

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Waves & Optics(1)↑ top

Wave Speed Calculator

Calculate wave speed, frequency, or wavelength using v = fλ.…

wave speedwave speed calculatorv=fλFeatured

Frequently Asked Questions

What is kinetic energy?: Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 m v², where m is mass and v is velocity. It increases with the square of speed.
How do I calculate force?: Force equals mass times acceleration (F = m a), Newton's second law. It is measured in newtons (N), where 1 N = 1 kg·m/s².
What is the difference between speed and velocity?: Speed is a scalar quantity (how fast), while velocity is a vector that also includes direction. An object moving in a circle at constant speed has changing velocity.